[GreenKeys] OT: weather balloon telemetry

[COURYHOUSE at aol.com]

Huh? assumed you had one. Gil most teletype people do. I am very  surprised!
Ham test is easy Gil. could have had a general when I was in 6th grade.... 
it was just the code that kept me from it. 
 

The tech license is real easy, the general is not much harder... I studied  
for the tech using one of the online drill and review sites... aced it... 
they  handed me the general test and asked if I wanted to try it and I said 
ok! 
 

( I had looked at some of those questions too and my odd little brain  
storage of details must have been working)
 

Passed the General just missing a couple questions... and they handed me  
the EXTRA test..

I looked at that test and saw instantly enough questions that I did not  
know when I quickly flipped though I played it safe and stopped.
 

Now... the next trick is to get some HF radio referbed and transmitting  
here at the museum or.... get something ready to roll. Been too so busy with 
all  of the history projects I have been procrastinating about actually using 
some of  the gear. Meanwhile if something ready to roll shows up on the 
doorstep we are  happy to put it to use!
 

See ya on the air... Eventually!
 

Ed Sharpe archivist for SMECC

 
 
In a message dated 11/5/2013 8:50:10 A.M. Mountain Standard Time,  
gil at baudot.net writes:

OK folks, after some good info from several of you, it does sound like  
using 144.390 MHz APRS tracking would be the best bet for this balloon  project.


This means I need to study for a ham test now, but they seem to be  offered 
frequently enough, so I guess I will need to start learnin' some new  stuff!


Back to my question about antennas:  what to hang under the  balloon?  It 
has been pointed out how it needs to be omni.  I  suppose the simplest would 
be a 1/4 wave hanging down, and suspended by three  or four angled ground 
wires that connect to a simple  three-or-four-radial-dowel frame or something. 
 The antenna would  collapse on the ground (of course we hopefully have GPS 
coordinates for the  descent, so we can find it).


Any other antenna recommendations?  Dipole?  Patch?   Nothing commercial -- 
something I can fabricate out of lightweight wire or  foil.


thx,  gil




gil smith
greenkeys moderator
_gil at baudot.net_ (mailto:gil at baudot.net) 


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